£443 : Cheap Flights from London to Buenos Aires

Flight FAQs

• Which airlines offer the cheapest flights from London (LON) to Buenos Aires (BUE)?

  Based on Trip.com data, United Airlines offers one-way fares as low as £443 on Cheapest nonstop routes (e.g. LHR to EZE on Sun, Feb 1), while avianca offers Cheapest nonstop round-trips from £742 departing on Mon, Feb 9 and returning on Mon, Feb 16.

• Which airlines offer direct flights from London to Buenos Aires?

  At the moment, you can catch a direct flight from London to Buenos Aires with the following airlines, including: Iberia British Airways Air Europa LATAM Airlines easyJet Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is the flight from London (LON) to Buenos Aires (BUE)?

  It takes about 16 hours 45 minutes to fly from London (LON) to Buenos Aires (BUE).

• When is the best time to book flights from London to Buenos Aires?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Buenos Aires is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from London to Buenos Aires?

  To find best deals on flights from London to Buenos Aires, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Feb 1, with one-way flights priced at just £443.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is British Airways.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Buenos Aires travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from London to Buenos Aires to get the best price?

  The cheapest months to fly from London to Buenos Aires is September, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from London to Buenos Aires?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from London to Buenos Aires on December 13, 2025 with American Airlines, with prices starting at £954.

• Which airports can I fly through when travelling to Buenos Aires from London?

  You can land at any one of the following hubs in Buenos Aires, with Heathrow Airport to Ministro Pistarini International Airport (LHR-EZE) is by far the most common option on this route: Jorge Newbery Airport (AEP) Ministro Pistarini International Airport (EZE).

• What is the time difference between London and Buenos Aires?

  The time difference between Buenos Aires and London is 3h.

• How can I change or cancel my flight ticket from London to Buenos Aires?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.